hi all,
we need to personalize the ap_invoice form and make the quantity field updatable and tried the WHEN-NEW-BLOCK-INSTANCE and setting the item PA_QUANTITY related to the quantity field to ALTERABLE (since update_allowed is not working)but works only for a single record.
Means that after saving and applying the personalization i can update only a single record and as soon as i move my cursor to next row's quantity field i cannot update the field.
Please help me in making this personalization persistent.

Yes i am entering only numeric quantity in this. As is said i am able to update bu just once and the again the personalization fails to act. Also i tried the WHEN-NEW-RECORD-INSTANCE with setting the property as either UPDATE_ALLOWED/ALTERABLE (APPLICATIONS COVER)/ENTERABLE (APPLICATIONS COVER) but none of them are working.